Paspalum scrobiculatum L.

Paspalum boscianum Fliigge, Gram. Monog. 170. 1810
Paspalum virgatum Walt. Fl. Car. 75. 1788. Not P. virgatum L. 1759. Paspalum brunneum Eosc; Fliigge, Gram. Monog. 171, as synonym. 1810. Paspalum purpurascens Ell. Bot. S. C. & Ga. 1 : 108. 1816. ? Paspalum compressum Raf . Fl. I^udov. 15. 1817. Paspalum conferlum Le Conte, Jour, de Phys. 91 : 285. 1820. A rather stout glabrous perennial with compressed stems, which often root at the lower nodes, flat leaf-blades and glabrous spikelets. Stems often branched, 5-12 dm. long; leafsheaths compressed, glabrous or the basal ones papillose-hirsute; blades 3 dm. long or less, 310 mm. wide, linear, flat, of medium texture, smooth or roughish, papillose-hirsute above near the base, otherwise glabrous; racemes 2-13, spreading or ascending, 4-9 cm. long, the rachis straight, 2-2.5 mm. wide; spikelets in pairs and often so crowded as to appear in 4 rows, redbrown, 2-2.3 mm. long, 1.5-1.8 mm. wide, broadly obovoid, glabrous, the first scale wanting, the second 5-nerved, the third 3-nerved, the fruiting scale deep-brown at maturity.
Type locality : [South] Carolina.
Distribution : Virginia and Tennessee to Florida and Texas ; Porto Rico.

Paspalum scrobiculatum L. Mant. 29. 1767
A tufted smooth and glabrous perennial, with fiat leaf-blades and glabrous spikelets. Stems 2-6 dm. tall, sometimes branched; leaf -sheaths compressed; blades 2 dm. long or less, 2-8 mm. wide, linear, erect, or nearly so, flat, of medium texture; racemes 2-5, 2-7 cm. long, the rachis 1.5-2 mm. wide; spikelets singly disposed, 2-2.5 mm. long and 1.5-1.75 mm. wide, oval, glabrous, the first scale wanting, the second and third scales 5-nerved, the lateral nerves approximate and distant from the midnerve, the fruiting scale deep seal-brown at maturity.
Type locality : Kast Indies.
Distribution ; Florida ; tropics of the Old World.